New comment by tornaria on void-packages repository

https://github.com/void-linux/void-packages/pull/34516#issuecomment-998762725

Comment:
@leahneukirchen simple packages, needed for sagemath, but they just work on their own and are fast:
```
$ time primesieve $((10**10))
Sieve size = 128 KiB
Threads = 8
100%
Seconds: 0.296
Primes: 455052511

real	0m0.298s
user	0m1.925s
sys	0m0.005s
$ time primecount $((10**10))
455052511

real	0m0.004s
user	0m0.005s
sys	0m0.001s
$ time primecount $((10**16))
279238341033925

real	0m1.236s
user	0m8.368s
sys	0m0.022s
```
Note: primesieve actually finds all primes, primecount just computes the number.